Abstract: Resins, made by admixing polyacrylic resin and epoxy resin in a weight ratio of polyacrylic:epoxy of 10:0.1 to 100 are cured in a diffusion gas atmosphere. An insulated conductor is coated with the polyacrylic-epoxy resin and cured without heat in a contacting gas atmosphere, such as nitrogen, carbon dioxide, argon, helium, methane, or hydrogen.

Abstract: A centrifugal compressor refrigeration system is made, employing a halocarbon gas refrigerant in contact with a lubricant composition comprising 100 parts of castor oil and from 20 parts to 110 parts of a chemically and thermally stable, low viscosity blending fluid, soluble in castor oil; wherein the halocarbon gas is only slightly soluble in the lubricant composition, which provides good lubricity over the expected temperatures and operating conditions of the refrigeration system and is highly resistant to chemical reaction with the halocarbon and/or materials in the refrigeration system.

Abstract: A resinous composition useful for impregnating flexible electrical winding tape is made by mixing:(a) 100 parts of polybutadiene, (b) about 0.25 part to about 25 parts of a solid, organic, aromatic, vinyl monomer coreactive with polybutadiene, (c) a solvent for the polybutadiene and (d) an effective amount of organic reaction catalyst.

Abstract: A photosensitive, solventless, low viscosity, oil free coating composition is made by admixing: (A) about 40 wt.% to about 90 wt.% of an alkyd component, consisting essentially of a polyhydric alcohol and a dibasic aromatic and aliphatic acid mixture with (B) about 10 wt.% to about 60 wt.% of an acrylate monomer and (C) an effective amount of a photoinitiator; the composition characterized by having a viscosity of up to about 2,000 cps. at 25.degree. C., and being capable of forming an ultraviolet radiation cured, hard, pin hole free film, having a thickness of under about 5 mils.

Abstract: An air electrode, for use in electrochemical energy cells, is made, comprising a multi-layer hydrophilic section, consisting of at least two substantially uncompacted laminated layers of plaques cntaining loaded, catalytically active battery material; each loaded plaque consisting of a 75% porous to 95% porous metal current collector, having between about 45% to about 95% of its pore volume filled with the active material, where the weight ratio of active material:plaque current collector in the laminated layers is between 0.40:1 and 2.80:1.

Abstract: A highly fluid, solventless, resinous, impregnating and coating composition, suitable as a high voltage insulation for electrical members, is made from an admixture containing: 100 parts of an epoxy resin, about 25 to 200 parts of an acid anhydride reactive with the epoxy resin, and about 0.002 to 1.00 part of a selected metal acetylacetonate, acting as a latent accelerator.

Abstract: An abrasion resistant traction article is made, comprising a cured, high traction, extended polyurethane composition, comprising the cured reaction product of: (1) 100 parts of a prepolymer made from polyoxytetramethylenediol, polyoxyisopropylenediol and tolylene diisocyanate and (2) 8.0 parts to 10.0 parts of methylene bis(o-chloroaniline), acting as a chain extender.

Abstract: A self-supporting electrode structure consisting of active material particles is made by: (1) mixing 100 parts of metallic iron particles, with between about 0.5 part to about 5.0 parts of a water soluble metal sulfate selected from MgSO.sub.4, CdSO.sub.4, MnSO.sub.4, ZnSO.sub.4, BaSO.sub.4, Cr.sub.2 (SO.sub.4).sub.3, CuSO.sub.4, CaSO.sub.4, Li.sub.2 SO.sub.4, their hydrates and mixtures, as an electrochemical activator, and an amount of water effective to form a thin coating of metal sulfate on the metallic iron particles, (2) sizing the mixture to between about 10 microns to about 275 microns average particle size, (3) pressing the coated iron particles, and (4) reducing and sintering the coated iron particles at between about 700.degree. C to about 1,000.degree.

Abstract: A water dispersible polyester resin solution is made by esterifying a mixture, consisting of: about 2.0 moles to about 5.0 moles of an organic, dicarboxylic acid selected from at least one, of an aromatic dicarboxylic acid, and tetrahydrophthalic acid; about 0.1 mole to about 1.5 moles of an organic, unsaturated aliphatic dicarboxylic acid; about 0.1 mole to about 6.5 moles of an organic, saturated aliphatic dicarboxylic acid; about 1.0 mole to about 5.0 moles of an organic, alicyclic dihydric alcohol; 0 mole to about 5.0 moles of an organic, aliphatic dihydric alcohol and about 0.6 mole to about 1.2 moles of a compound effective to cause cross linking; and adding an amount of organic solvent effective to provide a solution of between about 50 wt. % to about 90 wt. % solids content; wherein the esterification reaction is continued until the acid value drops to between about 45 to about 65, and wherein the mole ratio of OH/COOH = 0.30 to 0.90.

Abstract: A wax composition, useful as a ski wax is made, comprising a rigid wax matrix, and from about 3 wt.% to about 45 wt.% of a thermoplastic, water soluble polymer disposed within the wax matrix. The ski wax provides a surface where the water soluble polymer will be leached out of the rigid wax matrix upon contact with water, to provide a boundary lubricant film.

Abstract: A substrate is made for use as a top layer in a laminate; the substrate being impregnated with, and having a continuous film on its surface of, a dried, catalyzed, uncured resin, comprising the reaction product of 1 mole of melamine, about 1.8 moles to about 2.7 moles of uninhibited formaldehyde and about 0.05 mole to about 0.40 mole of urea; where the resin content of the substrate is between about 50 wt.% to about 85 wt.%, and the dried, continuous film on the substrate layer will cure within about 30 seconds to about 90 seconds, under pressures of between about 150 psi. to about 500 psi, without the formation of a discontinuous film.

Abstract: A composition, which is suitable for use as an adhesive, is made by mixing: (A) liquid epoxy resin and a stoichiometric excess of aromatic amine and (B) a reactive solid epoxy resin powder having an average particle size of from about 10 microns to about 420 microns, the mixture being capable of melting at temperatures of over about 60.degree. C; wherein solid epoxy (B) is mixed with a liquid mixture of epoxy-amine (A) the components of (A) form a solid reaction product adduct after addition of epoxy (B), the epoxy of (B) remains unreacted until melting of the composition, and the weight ratio of solid epoxy resin:adduct is from about 1 to 6:1.

Abstract: A composition, which is suitable for use as an adhesive, is made by mixing: (A) 1 part of an adduct reaction product consisting of a solid epoxy resin and a stoichiometric excess of an aliphatic amine; with (B) about 1 part to about 6 parts of a reactive solid epoxy resin powder having an average particle size of from about 10 microns to about 420 microns, the mixture being capable of melting at temperatures of over about 60.degree. C; wherein the epoxy of (B) remains unreacted until melting.

Abstract: A resinous composition, suitable as a high voltage insulation for electrical members, is made from an admixture containing: 100 parts of an epoxy resin, about 25 to 200 parts of an acid anhydride reactive with the epoxy resin, about 0.01 to 2.0 parts of chromium or zirconium acetylacetonate, acting as a latent accelerator and about 0.3 to 30 parts of a selected organic carboxylic acid, acting as a co-accelerator.

Abstract: A highly flexible mica winding tape is made by: (A) mixing epoxide resin with solvent, (B) adding from 0.01 to 5.0 parts per 100 parts epoxide resin of an organo-tin compound, and mixing to form a homogeneous admixture, (C) applying the admixture to a flexible sheet material comprising mica, so that the organo-tin compound contacts the mica, causing the organo-tin compound to act as a latent catalyst, and (D) removing solvent, to form a flexible sheet with substantially unreacted epoxide resin containing an amount of substantially unreacted organo-tin catalyst effective to advance the epoxide in the sheet material from the substantially unreacted state to a cured thermoset state upon heating over a resin-catalyst temperature of 120.degree. C.

Abstract: A method of making a homogeneous sintered body, which can exhibit non-linear V-I characteristics, comprises the steps of: (1) forming a single phase, chemically homogeneous glass, from a mixture of oxides containing at least Bi.sub.2 O.sub.3, which is effective to cause non-linearity within a ZnO ceramic body, (2) mixing 2.5 wt.% to 40 wt.% of the single phase, chemically homogeneous Bi.sub.2 O.sub.3 type glass, with 60 wt.% to 97.5 wt.% of ZnO particles, to form a uniform mixture, (3) pressing the glass-ZnO mixture, to form a consolidated body, and (4) sintering the pressed body, to form a ceramic body consisting of ZnO particles and a chemically homogeneous insulating layer formed from the Bi.sub.2 O.sub.3 type glass coating the ZnO particles and bonding the ZnO particles together.

Abstract: A high compressive strength phenolic resin foam is made by: adding between about 0.5 to 5.0 parts of a dual surfactant system and about 8 to 25 parts of a blowing agent, to 200 parts of a phenolic resole resin to form a pre-mix; agitating this pre-mix with about 20 to 70 parts of an aqueous dual sulfuric-phosphoric acid solution to provide a foaming phenolic material; immediately thereafter pouring or injecting the material into a mold or onto a suitable substrate, to provide a phenolic foam having a substantially uniform compressive strength of at least 40 psi. at between about 20% to 50% compression, at a deflection rate of between about 2 in./min. to about 5 in./min.

Abstract: A flexible, nontacky prepreg for use in bonding high voltage coils and inner cooling channels which comprises a fibrous mat material containing a high molecular weight epoxy and a sterically hindered anhydride. The resin comprises approximately 25 to 500% by weight of the fibrous mat material.

Abstract: A cured, insulating, casting composition, having a coefficient of linear thermal expansion of below about 38 .times. 10.sup.-6 in./in./.degree. C and being resistant to arced sulfur hexafluoride gas, in contact with a metal surface in a sulfur hexafluoride gas environment, is made from hydantoin epoxy resin, anhydride curing agent and a filler combination of fused silica and alumina trihydrate.

Abstract: Reliability of power circuit breakers and other equipment containing parts subjected to an environment of arced sulfur hexafluoride is improved by using a cycloaliphatic epoxy resin filled with aluminum trihydrate and thickened with finely divided, highly dispersed aluminum oxide (alumina).